import java.util.List;

/**
 * Created with IntelliJ IDEA
 * Description:
 * User: lenovo
 * Date: 2023 -05 -01
 * Time: 12:29
 */
public class Test {
    public static void main(String[] args) {
        Work work=new Work();
        Work.TreeNode ret =work.creat();
       List<Character>ret2= work.postorderTraversal(work.root);
        System.out.println(ret2.toString());
    }
}
